Expose SIMD.Float32x4 type to Javascript.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 4fdb63dd877e5510e13d8dc9d49a6a071b5eaefa..efe35ed30ecab035dc602df3b821b8f9002fd238 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -81,6 +81,8 @@ MaybeHandle<JSReceiver> Object::ToObject(Isolate* isolate,
     constructor = handle(native_context->string_function(), isolate);
   } else if (object->IsSymbol()) {
     constructor = handle(native_context->symbol_function(), isolate);
+  } else if (object->IsFloat32x4()) {
+    constructor = handle(native_context->float32x4_function(), isolate);
   } else {
     return MaybeHandle<JSReceiver>();
   }
@@ -605,7 +607,7 @@ Map* Object::GetRootMap(Isolate* isolate) {
 
   HeapObject* heap_object = HeapObject::cast(this);
 
-  // The object is either a number, a string, a boolean,
+  // The object is either a number, a string, a symbol, a boolean, a SIMD value,
   // a real JS object, or a Harmony proxy.
   if (heap_object->IsJSReceiver()) {
     return heap_object->map();
@@ -624,6 +626,9 @@ Map* Object::GetRootMap(Isolate* isolate) {
   if (heap_object->IsBoolean()) {
     return context->boolean_function()->initial_map();
   }
+  if (heap_object->IsFloat32x4()) {
+    return context->float32x4_function()->initial_map();
+  }
   return isolate->heap()->null_value()->map();
 }
 
@@ -639,7 +644,7 @@ Object* Object::GetHash() {
 
 Object* Object::GetSimpleHash() {
   // The object is either a Smi, a HeapNumber, a name, an odd-ball,
-  // a real JS object, or a Harmony proxy.
+  // a SIMD value type, a real JS object, or a Harmony proxy.
   if (IsSmi()) {
     uint32_t hash = ComputeIntegerHash(Smi::cast(this)->value(), kZeroHashSeed);
     return Smi::FromInt(hash & Smi::kMaxValue);
@@ -662,6 +667,16 @@ Object* Object::GetSimpleHash() {
     uint32_t hash = Oddball::cast(this)->to_string()->Hash();
     return Smi::FromInt(hash);
   }
+  if (IsFloat32x4()) {
+    Float32x4* simd = Float32x4::cast(this);
+    uint32_t seed = v8::internal::kZeroHashSeed;
+    uint32_t hash;
+    hash = ComputeIntegerHash(bit_cast<uint32_t>(simd->get_lane(0)), seed);
+    hash = ComputeIntegerHash(bit_cast<uint32_t>(simd->get_lane(1)), hash * 31);
+    hash = ComputeIntegerHash(bit_cast<uint32_t>(simd->get_lane(2)), hash * 31);
+    hash = ComputeIntegerHash(bit_cast<uint32_t>(simd->get_lane(3)), hash * 31);
+    return Smi::FromInt(hash & Smi::kMaxValue);
+  }
   DCHECK(IsJSReceiver());
   JSReceiver* receiver = JSReceiver::cast(this);
   return receiver->GetHeap()->undefined_value();
@@ -688,6 +703,14 @@ bool Object::SameValue(Object* other) {
   if (IsString() && other->IsString()) {
     return String::cast(this)->Equals(String::cast(other));
   }
+  if (IsFloat32x4() && other->IsFloat32x4()) {
+    Float32x4* x = Float32x4::cast(this);
+    Float32x4* y = Float32x4::cast(other);
+    return v8::internal::SameValue(x->get_lane(0), y->get_lane(0)) &&
+           v8::internal::SameValue(x->get_lane(1), y->get_lane(1)) &&
+           v8::internal::SameValue(x->get_lane(2), y->get_lane(2)) &&
+           v8::internal::SameValue(x->get_lane(3), y->get_lane(3));
+  }
   return false;
 }
 
@@ -703,6 +726,14 @@ bool Object::SameValueZero(Object* other) {
   if (IsString() && other->IsString()) {
     return String::cast(this)->Equals(String::cast(other));
   }
+  if (IsFloat32x4() && other->IsFloat32x4()) {
+    Float32x4* x = Float32x4::cast(this);
+    Float32x4* y = Float32x4::cast(other);
+    return v8::internal::SameValueZero(x->get_lane(0), y->get_lane(0)) &&
+           v8::internal::SameValueZero(x->get_lane(1), y->get_lane(1)) &&
+           v8::internal::SameValueZero(x->get_lane(2), y->get_lane(2)) &&
+           v8::internal::SameValueZero(x->get_lane(3), y->get_lane(3));
+  }
   return false;
 }
 
@@ -1515,8 +1546,12 @@ void HeapNumber::HeapNumberPrint(std::ostream& os) {  // NOLINT
 
 
 void Float32x4::Float32x4Print(std::ostream& os) {  // NOLINT
-  os << get_lane(0) << ", " << get_lane(1) << ", " << get_lane(2) << ", "
-     << get_lane(3);
+  char arr[100];
+  Vector<char> buffer(arr, arraysize(arr));
+  os << std::string(DoubleToCString(get_lane(0), buffer)) << ", "
+     << std::string(DoubleToCString(get_lane(1), buffer)) << ", "
+     << std::string(DoubleToCString(get_lane(2), buffer)) << ", "
+     << std::string(DoubleToCString(get_lane(3), buffer));
 }